Leonard L. Gumport

Attorney Profile

Top Rated Bankruptcy Attorney in Los Angeles, CA

Gumport | Mastan
 | 550 South Hope Street, Suite 1765
Los Angeles, CA 90071
Phone: 213-452-4901
Selected to Super Lawyers: 2007 - 2019
Licensed Since: 1979
Education: Columbia Law School
Practice Areas:
  • Bankruptcy: Business (50%),
  • Business Litigation (30%),
  • Alternative Dispute Resolution (20%)
Attorney Profile

Attorney Leonard L. Gumport is the co-founding partner of the Los Angeles firm of Gumport | Mastan where he focuses on bankruptcy and business litigation, and investigations, including litigation and investigations involving allegations of public corruption. He has served as counsel to bankruptcy trustees, public entities and creditors, and has also served as a bankruptcy trustee, SIPC trustee, bankruptcy examiner and provisional director. With more than 30 years of experience as a litigator, he is admitted to practice in Alaska, California, District of Columbia and New York. He has argued appellate matters in the California Court of Appeal, the 9th U.S. Circuit Court of Appeals and the U.S. Supreme Court, and he has served as trial counsel in bankruptcy court, federal district court, and state court.

Mr. Gumport received his undergraduate degree from Yale and his law degree from Columbia Law School. In addition to his practice, he is a member of the panel of mediators of the U.S. District Court for the Central District of California and the U.S. Bankruptcy Court for the Central District of of California.  Cases mediated by him include civil government enforcement proceedings, bankruptcy-related disputes, and litigation under consumer protection statutes.  He has also served as a lawyer representative to the 9th Circuit Judicial Conference and as chair of the Federal Courts Committee of the Los Angeles County Bar Association.

Practice Areas
Lawyer Practice Area Pie Chart

Bankruptcy (50%)

Business Litigation (30%)

Alternative Dispute Resolution (20%)


Selected to Super Lawyers for 13 yearsbottom-image

Super Lawyers: 2007 - 2019

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About Leonard Gumport

Admitted: 1979, California

Professional Webpage: www.gumportlaw.com/attorneys/leonard-gumport/


  • "AV" Rated by Martindale-Hubbell
  • Harlan Fiske Stone Scholar, Columbia University

Bar/Professional Activity:

  • Chair, Federal Courts Committee, Los Angeles County Bar
  • Alaska, 2008
  • Member, Los Angeles Bankruptcy Forum
  • Member, Los Angeles Receivers Forum
  • Member, Los Angeles County Bar Association
  • Member, American Bankruptcy Institute
  • U.S. District Court Southern District of California, 1980
  • U.S. District Court Northern District of California, 1980
  • U.S. District Court Eastern District of California, 1980
  • U.S. District Court Central District of California, 1980
  • U.S. Court of Appeals for the Ninth Circuit, 1980
  • U.S. Supreme Court, 1980
  • District of Columbia, 1980
  • California, 1979
  • New York, 1978

Pro bono/Community Service:

  • Panel Mediator, U.S. District Court for Central District of California , 2012
  • Mediator, United States Bankruptcy Court, Central District of California

Scholarly Lectures/Writings:

  • "Public Corruption: Maximizing Remedies" at the annual meeting conference of the County Counsels' Association of California
  • Lawyer Representative, Ninth Circuit Judicial Conference, 1998-2000
  • Author, "The Bankruptcy Examiner," 20 Cal. Bankr. J. 71, 1992

Representative Clients:

  • In re Intermagnetics America, Inc., 926 F.2d 912, (9th Cir. (Cal.)) (NO. 90-55160), Feb 26, 1991
  • In re Thrifty Oil Co., 205 B.R. 1009, Bkrptcy. S. D. Cal., Feb 20, 1997
  • County of San Bernardino v. Walsh, 158 Cal. App. 4th 533, 2008

Educational Background:

  • Yale University, New Haven, Connecticut, United States of America, B.A., summa cum laude, Phi Beta Kappa, 1972
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Office Location for Leonard L. Gumport

550 South Hope Street
Suite 1765
Los Angeles, CA 90071

Phone: 213-452-4901


Leonard L. Gumport:

Last Updated: 9/25/2018

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